People have wondered for a long time how their personalities and behaviors are formed It is not easy to explain why one person i

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问题     People have wondered for a long time how their personalities and behaviors are formed It is not easy to explain why one person is intelligent and another is not, or why one is【C1】______and another is competitive.
    Social scientists are, of course, extremely interested in these types of questions. They want to explain why we possess certain characteristics and【C2】______certain behaviors. There are no clear answers yet, but two【C3】______schools of thought on the matter have developed. As one might expect, the two【C4】______are very different from one another, and there is a great deal of debate between proponents(支持者)of each theory. The controversy is often【C5】______to as "nature vs nurture".
    Those who support the "nature" side of the conflict believe that our personalities and behavior patterns are largely determined by biological and【C6】______factors. That our environment has little, if anything, to do with our abilities, characteristics and behavior is central to this theory. Taken to an extreme, this theory maintains that our behavior is predetermined to such a great degree that we are almost completely【C7】______by our instincts.
    Proponents of the "nurture" theory, or, as they are often called, behaviorists, claim that our environment is more important than our biologically based instincts in determining how we will act. A behaviorist, B. F. Skinner, sees humans as beings whose behavior is almost completely【C8】______by their surroundings.
    Neither of these theories can yet【C9】______explain human behavior. In fact, it is quite likely that the【C10】______to our behavior lies somewhere between these two extremes. That the controversy will continue for a long time is certain.
A)governed B)referred C)strategies D)fully
E)consulted F)genetic G)reveal H)shaped
I)scarcely J)approaches K)key L)exhibit
M)cooperative N)resolution O)distinct
【C4】

选项

答案J

解析 two表明此处需填入名词复数,为句子主语。该名词应复指上文的schools of thought(思想流派),approaches表示“方法,途径”,故正确。
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